I don not know _____ with this problem.It is too hard._You can ask Mr.Wang for help.A.which to dA.which to do B.when to do C.how to do D.what to do

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I don not know _____ with this problem.It is too hard._You can ask Mr.Wang for help.A.which to dA.which to do B.when to do C.how to do D.what to do

I don not know _____ with this problem.It is too hard._You can ask Mr.Wang for help.A.which to dA.which to do B.when to do C.how to do D.what to do
I don not know _____ with this problem.It is too hard._You can ask Mr.Wang for help.A.which to d
A.which to do B.when to do C.how to do D.what to do

I don not know _____ with this problem.It is too hard._You can ask Mr.Wang for help.A.which to dA.which to do B.when to do C.how to do D.what to do
应该是D
首先按句子意思A、B不能选
我不知道【哪个去做】、我不知道【什么时候去做】这个问题.后面有too hard.太难,应该是我不知道怎么去解决这个问题,或者我不知道对这个问题我要做什么,之类的意思
那么C和D.关键在原句中的【with】,大意为【和】,关于这个问题什么的.
how在于【怎么】(方式方法……),应该是怎么【解决这个问题】 what 则是【什么】(就是根本不知道要做什么),what to do 是【做什么】
应该是【做什么】去解决这个问题,what to do with this problem...也就等于 how to deal with this problem (deal with 意为解决)【怎么解决这个问题】
就是what to do with=how to deal with
就像what to do = how to do it.【(例如)不知道~做什么=不知道~怎么做这件事】
也是学生= =解释的可能不太清楚抱歉.看看大概也能明白吧⊙﹏⊙b汗